chore: add deprecation notices for some methods

Those methods are now replaced by more generic methods at the server
level, and will be removed in the next major release.

Regarding the allRooms() method, we may also remove it, as transferring
all rooms (including private ones) across the cluster is not really
efficient, and users could use `serverSideEmit()` instead to implement
their own logic.

Author: darrachequesne

lib/index.ts

@@ -652,6 +652,8 @@ export class RedisAdapter extends Adapter {
   }
 
   /**
+   * @deprecated Please use `namespace.fetchSockets()` instead.
+   *
    * Gets a list of sockets by sid.
    *
    * @param {Set<Room>} rooms   the explicit set of rooms to check.
@@ -741,6 +743,8 @@ export class RedisAdapter extends Adapter {
   }
 
   /**
+   * @deprecated Please use `namespace.socketsJoin()` instead.
+   *
    * Makes the socket with the given id join the room
    *
    * @param {String} id - socket id
@@ -785,6 +789,8 @@ export class RedisAdapter extends Adapter {
   }
 
   /**
+   * @deprecated Please use `namespace.socketsLeave()` instead.
+   *
    * Makes the socket with the given id leave the room
    *
    * @param {String} id - socket id
@@ -829,7 +835,10 @@ export class RedisAdapter extends Adapter {
   }
 
   /**
+   * @deprecated Please use `namespace.disconnectSockets()` instead.
+   *
    * Makes the socket with the given id to be forcefully disconnected
+   *
    * @param {String} id - socket id
    * @param {Boolean} close - if `true`, closes the underlying connection
    *